20863160

素因数分解:

$2^3\times 5^1\times {\mathrm{199}}^1\times {\mathrm{2621}}^1$

素因数の和:2831

約数の個数: 32

約数和(自身を含む): 47196000

約数和(自身を除く): 26332840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 199, 398, 796, 995, 1592, 1990, 2621, 3980, 5242, 7960, 10484, 13105, 20968, 26210, 52420, 104840, 521579, 1043158, 2086316, 2607895, 4172632, 5215790, 10431580, 20863160]

約数ペア:

[(1, 20863160), (2, 10431580), (4, 5215790), (5, 4172632), (8, 2607895), (10, 2086316), (20, 1043158), (40, 521579), (199, 104840), (398, 52420), (796, 26210), (995, 20968), (1592, 13105), (1990, 10484), (2621, 7960), (3980, 5242)]